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Updated: May 22, 2026

Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
Novel method to reduce fishy aftertaste in wine and seafood pairing using alcohol-treated yeast cells
Toshikazu Tsuji1, Keiko Kanai, Aki Yokoyama
1Central Laboratories for Frontier Technology, Kirin Holdings Company Limited, 1-13-5 Fukuura Kanazawa-ku, Yokohama-shi, Kanagawa, Japan. toshikazu_2_tsuji@kirin.co.jp
Abstract:
"Fishy aftertaste" is sometimes perceived in wine consumed with seafood. Iron in wine has been reported to be a key compound that produces fishy aftertaste. However, cost-effective methods to remove iron from wine have not been developed. Here, we describe a cost-effective and safe iron adsorbent consisting of alcohol-treated yeast (ATY) cells based on the observation that nonviable cells adsorbed iron after completion of fermentation. Treatment of cells with more than 40% (v/v) ethanol killed them without compromising their ability to adsorb iron. Drying the ATY cells did not reduce iron adsorption. Use of ATY cells together with phytic acid had a synergistic effect on iron removal. We term this means of removing iron the "ATY-PA" method. Sensory analysis indicated that fishy aftertaste in wine-seafood pairings was not perceived if the wine had been pretreated with both ATY cells and phytic acid.
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